Excavator-shovel.



PATENTED .TULY 31, 1906.-

No 827,144.- L. W. OONNELL.

'EXOAVATOR SHOVEL. APPLICATION TILED M1}? 9, 1906.

SHEET 2.

to being back? of the center of gravity ofthe 'ment in Excavator-Shovels, of which t e folv tion of the mechanism. for operating the no ':'i It is adapted to 'causea quick dum ing [and is effective, simple, and easily contro led,

q and in these respects'is animprovement on zprevious mechanisms used for the same pu'rclosed in the description given below and is *alsoillu'stratedintheaccom anyingdrawings, forming a part of this spec! j rovided'with my invention} at Fig. '2, an enarged side elevation of the shovel; at Fig 3, a

i Y sideelevation of-the controlling mechanism;

at Fig. 4", a rearfelevation of the shovel and 7 as'ection on the line 7 7 of Fig. 6.

. v crane for operating the shovel; 9, the car upon *united. b .a shaft or pivot 19, so that they, .with sai pivot, form a bail for the shovel.

. j bers 20 0f a frame, supporting at their upper ends .the' shaft 21 of the sheave 22, under I the liftingro e11 passes. The mom,- .ber s"'-20 areunitedy the pivot 19and the [Be it knownthat I, LEWIS I citizen of the United States, residing in J ohet, in the county of Will and State of TlllIiOls,

" Inovernentsreceived-bythesheave the UNITED; STATES LEWIS w. ooNN LL, or JULIET, ILLINOIS.

EXCAVATOR-SHOVEL.

Applieatiqu as May 9, 1

To all -whom it Maj concern:

We CONNELL, a

have invented a new and useful Im rovelowing is a specification.

' This invention is an improved construcshovels or buckets of excavators and dred'ges.

ose. I The nature of the improvement is fully disa cation,'and,showing, at Figure: 1, an elevation of an excavator controlling mechanism; at Fig. 5, a partial plan of the filling end of the shovel; at Fig. 6, a'section on the line 6 6 of Fig.4, andat Fig.

In said drawings, 3 represents the platform of. an excavator provided withv a derrickwhich the excavator is mounted 10, the winch of [the lifting-rope 11; 12, the winch of the crane; 1 5,the moving jib thereof,,and 16 the changed, The sh vel is shown at .17 and is hinged to arms 18, thepivots connecting it tothe arms shovel. -At their upper ends the'arms 18 are Upon the, pivot 19 is mounted the sidememshaft 21 and alsfo at their lower ends by the shaft 23,upon which is mounted a sprocketwheel;;24 'A :chain 25 connects wheel 24 with anothe'r s rocket-wheel 26 on the shaft 21 andfast wit the sheave 22, so that all the Specificationof Letters Patent.

906- Serial No. 315.902.

.all events rigid with said frame 31. hook naturally rests upon the 'pivot35, as

mania July 31, mos.

lifting-rope are communicated tothe wheel 24. The frame members 20 are permitted to rock on pivot 19 for purposes presently to be explained, and the wheel 24 has a cl tchin-g connection to an adjacent pin-wheel 27, mounted on the same shaft therewith and having laterally-projecting pins 28. The clutch employed for actuating the pinewheel" should be adapted to'drive the wheel in one direction, and a suitableconstructi'on thereof a series of freely-pivoted pawls 29, which en gage teeth or shoulders 30, formed interiorly of the rim of the in-wheel on the side thereof adjacent to whee 24. I I

The pin-wheel causes .the tripping or unlatching of the shovel, as follows: The bail is connected to the rear of the shovel by a toggle composed t'wo frames 31' and 32. Of these, frame 31 is pivoted at its lower end on Ineansof the pivot 34, to the lower end of the frame 32 and this frame is pivoted at its upper end-upon the pivot 35, supported in'two side pieces 36, the upper ends of which are stayed on the pivot 19, and the lower ends are fixedly secured to the cross-piece 37, which is preferably provided to connect the two sides of the bailabove the back. Within the up or frame 32 is the hook 38, preferably former in one piece with the frame 31, or at This plainly seen at Figs. 2 and 3, or upon the sleeve inclosing said pivot 35 and attached to t 1e load to the place of discharge. The point of the hook 38 is so locatcdthat it will encounter 5 the weight of the shovel comes upon the lifting-rope 11. In fact, the hook is normally in the ath of the pins, so that whentho rope 11 .100

is s ackened and the sheave 22 is operated the ins will approach the hook from'below and lit it, so that it will be released and allow the superior weightat the forward end of the shovel to dump it,;the toggle-frames 31 and '105' 32 doubling-up andpermitting the dumping.

The sheave-frame'isnormally' pressed away fromthe hook by the springs 39, encircling rods 40, passing t rough the ends of the shaft 35'and bearing 'against'the lower end of said 1 10] 7 5 is illustrated at Fig. 7, the wheel 24 carrying 7 S pivot 33 ,and at its 11 pper end it is pivoted, by

. the toggle-frame 32, so that-1i is adapted to hold the shovelagainst tipping wh ile is being gathered and while it is being swung frame or against the shaft 23. act to prevent These springs the pins from engaging the hook after the dumpingand during the re latching. At such times the strain of the rope keeps the pin-wheel forward of the hook, so that it cannot operate the latter even if it is rotated in the direction in which it is intended that it should release the hook. The bail is provided with a Weight 41, supported the forked frame are secured to said ears. Thehooked ends of theframe extendrear- Wardly-of said pivots, it-Will be seen, especially at Fig. 2, :andsaid pivots are located in a. plane above that of the hooks. l Viththis constructionxit will be noted that when the shovelvis'being drawn forward-to gatherthe load the tendency of. the hooked ends is to tip the rear end of. the shovel upward, so that its forward edge will enter the ground and gather its load quickly.

The operation of myinvention is as fol lows: Sn posing the shovel to have been loaded t e rope .11 is then drawn upon-to lift the shovel preparatoryto. swinging itto the dumpingepoint. Vilhen the dumpingpoint=is reached, thezrope 1.1 is slackened, causing a reversal of'the sprocket-wheel 24, by which the pin-Wheel is operated, and the motion. so givenithelpin-wheelcarries one of the pins 28 underithezpoint of. the hook and raises it, soi thattheshovel' is released and al lowed to. tip by the superior gravity of its forward end. Vifhenrthe shovelis drawn forward :by i the rope 13, that .movement does not. cause the tripping of the shovel; because the sheavelrame 20 isitherehy swung to a positionz-in-which the pins 28 do not. act upon the hook.

I claim 1. The combination with the shovel of an excavator, of a lifting-rope, a latching device for controlling the dumping ofthelload, and mechanism operated by thedifting rope and sezgiee acting to operate said latchingdevicc by tho slackening or paying out of the rope.

The combination with the shovel of an excavator, of a latching device controlling the dumping of the shovel, means for releasing-said device, and a swinging frame cztrlfving said releasing mains and positioned by the lifting-rope The combination with the shovel of an excavator, of a latching device, controlling the dumping of the shovel, a rotating releasing-Wheel at one end of a swinging frame, a rope-sheave at the othcn end of said frame, said frame and a lifting-rope passing around said sheave and swinging said frame.

4. The combination with the shovel and its latching device controlling the dumping, of the lifting-rope, the sheave operated by the rope, the swinging'framc carrying sn id sheave, the releasing-wlicel in said frame, the sprocket-Wheels andtheir (mnnecting-chain and a clutch connection between one of the sprocket-Wheels and said releasingm'heel.

5. The combination \vitlrthe shovel and its latching device controlling the dumping, of thelifting-rope, the rocking frame mounted on the hail of the shovel, ll-1e sheave in .d frame around which thc'rope passes, a

iug-Wheel for releasing the latch support d in said frame, and means operated by said "heave and having a clutch connection to and operating said releasing'wheel.

6. The excavntor-shovel in combination with the rope l3 and the connection between said rope andithe shovel, said connection being adapted when said rope is drawing-the shovel to raise the rear end of the shovel.

7. The excavator-shovel in with a toggle for holdingit against tipping while gathering its load and while moving to the place of discharge, a-lateh or hook attached to the toggle, and means for; releasing the latch.

8. The excavator-shovel in combination with a togglefor'holding'it against tipping while gathering its load and while moving to the place of discharge, a latch or hook at-- tached to the lower member of said'toggle,

and means for releasing thelatch.

LEWIS iW. CONNEIQL. 'VVitnesses:

H. M. M UNDAY, EDW. S. EvAn'rs.

combination 

